Brand new 2018 86 already with a CEL!
 

After leaving work today, driving my car like I normally do, I suddenly saw the CEL appear. Luckily, I live close to work. As soon as I got home, I took out my dad's FIXD dongle and checked it on my phone. (The screenshots were uploaded to imgur which can be found in the link below.)

There were two issues found. Here is the exported log for one of those issues which is also in 2 of the 5 screenshots:
What should I do? Can anyone tell me what's wrong here? I don't understand what happened. I haven't done anything to the car that relates to the engine or drivetrain except change the engine oil, transmission oil, and rear differential oil after break-in. I also removed the stock intake tube and sound resonator tube, replaced with a Perrin one. Other than those, nothing else that would cause a CEL was done. I also make sure my gas cap is tightly closed after filling up. I've only used 93 octane since I bought the car. These logs were taken with the car sitting on idle as well. The engine idles as normal, no funny sounds, nothing out of the ordinary. Should I just clear the codes? Should I take it to the dealership?

https://imgur.com/a/xfmo6fJ

http://www.ft86club.com/forums/showthread.php?p=2709653


But it's under warranty so take it back to the dealership.

I just saw the exact two posts with the same codes. I apologize for opening this thread. I would have searched but I didn't remember the codes.

Thank you!

Can I have a mod please delete this thread? Sorry again.

Put the stock intake tube and sound resonator back on before you go to the dealership, anything that messes will MAF will void your warranty when they go to check the intake....

Ah, too late. I already took it. Could the intake tube really do that kind of damage or do you mean Toyota will look for any excuse so they can to skate out of covering the warranty?

If you installed it weird you could've messed up the maf, but more importantly it depends on the dealer and they might just blame on the intake tube.

Understood. I installed it perfectly with no leaks. I've done bolt-on installs before on my other cars and I can't see how this install, which was much simpler by far, could have messed up the MAF. I'm not saying the MAF couldn't possibly be messed up but I can't see how my install could have done it. I also installed it three and a half weeks ago with no issues whatsoever.

What are the codes exactly? At least you are honest and did not try to fool the dealer by changing it back to stock, but the truth is dealers will often look for reasons not to cover a warrantee repair if the car has been modified.

I saw the codes in your link...some type of air/fuel imbalance between cylinders. Whatever that means.

Good to know, let us know what the dealer says. I'd be wary of them just outright voiding the warranty on the intake tube.

I'll keep you all updated then. Wish me luck! For now, I'm driving a RAV4. Sigh.

So I spoke to Toyota today. Tomorrow will be 1 week without my car but only because of the long weekend last weekend. They said Toyota has a TSB for this issue now. They (the techs) said the same thing others mentioned in the other thread. They said this has to do with the valves (getting stuck?) and that they have to pull out the engine to fix the issue.

My two choices, of course, are to let them fix it or say no and take my car back. If I choose to take it back, the issue doesn't go away and can potentially create a bigger issue. If that happens, it will no longer be covered under warranty because I didn't take the offer to have the first issue resolved. If I let them pull the engine and "fix" the issue, I have this uneasy feeling of the job not being done right and possibly end up with "extra nuts and bolts", if you know what I mean. Sigh.

Alas, I opted to have them fix it. They assured me they have really good technicians who know what they're doing. They asked for another week to hold onto my car. I asked them to please be careful with my car and do the job right which the manager said he'd make sure of it. They also offered to have it cleaned, washed and detailed once done.

Here's to hoping that; ONE, the issue is indeed the valves and that what they have in mind actually fixes it, TWO, they don't scratch, ding, scuff up my car, THREE, everything is restored to factory specs and exactly the way I gave it to them, LAST BUT NOT LEAST, nothing I have in my glovebox or trunk goes missing. Sigh. Pray for me. Lol.

That's a relatively well known issue that's been found on 18s, if you're going to have distrust with a dealership that just follows a procedure on techstream you really can't buy any new car. If they did something wrong or "took" something you car is still warrantied for several years and several thousand miles should something else arise related to that fix they will repair it again.

The fact you're asking a toyota dealership to return things to factory spec :lol:

So how can the engine that has been around since 2013 have issues like this in a 2018 car? The 2018 are not a "first year model" and are using the same powerplant we have been all using since 2013. Shouldn't all the bugs have been worked out by now?